rust/tests/ui/pattern/array-length-mismatch-13482.rs

//! Regression test for https://github.com/rust-lang/rust/issues/13482

fn main() {
  let x = [1,2];
  let y = match x {
    [] => None, //~ ERROR pattern requires 0 elements but array has 2
    [a,_] => Some(a)
  };
}
comments 2025-07-24 17:52:22 +05:00			`//! Regression test for https://github.com/rust-lang/rust/issues/13482`

Add unreachability detection for missized patterns of fixed size vectors Fixed #13482 2014-06-01 14:40:55 +02:00			`fn main() {`
			`let x = [1,2];`
			`let y = match x {`
implement RFC495 semantics for slice patterns non-MIR translation is still not supported for these and will happily ICE. This is a [breaking-change] for many uses of slice_patterns. 2016-03-11 12:54:59 +02:00			`[] => None, //~ ERROR pattern requires 0 elements but array has 2`
Add unreachability detection for missized patterns of fixed size vectors Fixed #13482 2014-06-01 14:40:55 +02:00			`[a,_] => Some(a)`
			`};`
			`}`